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What is the use of operating curve of centrifugal pump to chemical engineers in Process Engineering ?

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تم إضافة السؤال من قبل Mohammed Khan
تاريخ النشر: 2015/08/08
Ahmed Sarwat Hashem
من قبل Ahmed Sarwat Hashem , Project Engineering Manager & Deputy Project Manager , 1.2 B$ Phosphoric & Sulphuric Acids Mega Project in Egypt (WAPHCO)

Pump curves are essentially data about a given pump's ability to produce flow against certain head. And it is a primary tool for pump selection. Being able to read and understand a pump curve is an essential skill if you're someone who needs to select a pump for a specific application and you want to ensure that that your pump enjoys a long service life operating at maximal efficiency.

joseph ademoyegun
من قبل joseph ademoyegun , Lead Process / Facilities Engineer , NPDC – ND Western Operating Joint Venture (OML 34 Asset Management Team

The operating curve of the centrifugal pump allows to select the operating point of the system with greater efficiency to minimize the power .

Ashokkumar Shah
من قبل Ashokkumar Shah , Consultant - Process & Project Engineering , Free Lancer

This curve helps in selecting the correct model of pump & in future for capacity augmentation.

Ron Del  De Castro
من قبل Ron Del De Castro , Management Systems Auditor , Maynilad Water Services Inc

Pump curves are important to get the proper pump size for each application with maximum efficiency. 

Ashish kumar
من قبل Ashish kumar , senior process engineer , HALDOR TOPSOE

Operating curve of centrifugal pump defines the range where system loss is less than head produced by pump. It also gives idea about the pressure drop across control valve in Pump discharge.

Jayaraman Gopalakrishnan
من قبل Jayaraman Gopalakrishnan , Senior Process Engineer , Pfizer

1. To choose the pump for the required head, capacity.

2. To select the motor to provide necessary power to drive the pump.

3. To anayse the pump efficiency for energy monitoring.

 

Feroz Habid
من قبل Feroz Habid , Lead Process Engineer , Sasol

The curve provides information of a pump head over the flow range stipulated on the curve. One can take the head at a specific flow and multiply it by gravity and fluid density of the pump fluid to get the discharge pressure of the pump.

Juan Perdomo
من قبل Juan Perdomo , Cryogenic Complex Liaison Manager , PDVSA GAS

The operating curve of the centrifugal pump allows to select the operating point of the system with greater efficiency to minimize the power consumption that meets the pressure requirements.

It also allows the engineer to establish:

1.- The maximum pressure with zero flow (closed discharge valve) to size the safety valve to be installed in the pump discharge.

2.- Establish the mechanical resistance to specify the pipes and accessories downstream in the system.

3.- Select the most suitable pump recirculation valve for protection by minimum flow.

4.- Specify the maximum capacity of the electric motor or gas / steam turbine to avoid overload when the pump operates at the point of maximum flow.

Mishal Rabih   Alsulami
من قبل Mishal Rabih Alsulami , Chemical Engineer , AGC

to increased flow rate as head pressure decreases. the curve also shows the shut off head or the head that pump would generate if operating aginast a closed valve 

Syed Muhammed Khurram Qamer
من قبل Syed Muhammed Khurram Qamer , Head of Manufacturing Operations , Unilever Pakistan Limited – Beauty & Personal Products Plan

It provides relationship between pump head vs flowrate and is helpful in determining safe operating ranges of a centrifugal pump during daily operations for e.g.

  1. Shutoff head is the maximum head that can be developed by a centrifugal pump at a fixed speed.
  2. Similarly, without damaging the pump, the maximum flowrate that can be obtained at a fixed speed can be termed as Pump runout.
  3. It also helps in optimum selection of pump for desired operation.

 

عباس شریف مهر
من قبل عباس شریف مهر , Supervisor , Marun petrochemical

.Use of operatator curve of centrifugal pump is beter than Mathematical equations

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